Load-Measuring Pot Bearing with Built-In Load Cell —Part II: Fatigue Performance and Experimental Temperature Correction
- 1 Structural Engineering Research Division, Korea Institute of Construction Technology, Goyang-Si, Korea
- 2 Structural Engineering Research Division, Korea Institute of Construction Technology, Goyang-Si, Korea
- 3 Structural Engineering Research Division, Korea Institute of Construction Technology, Goyang-Si, Korea
- 4 Structural Engineering Research Division, Korea Institute of Construction Technology, Goyang-Si, Korea
- 5 Structural Engineering Research Division, Korea Institute of Construction Technology, Goyang-Si, Korea
- 6 Structural Engineering Research Division, Korea Institute of Construction Technology, Goyang-Si, Korea
Abstract
This paper presents the results of fatigue performance tests performed up to 10 million cycles on a load-measuring pot bearing with built-in load cell to verify its field applicability and proposes an empirical temperature correction formula. In Part I of this work, various measurement performances of the load-measuring pot bearing were evaluated through static and dynamic loading tests. Bridge bearings are subjected to the effect of fatigue caused by the repeated application of moving loads and exposed to harsh site conditions including cold and hot weathers differently to laboratory conditions. Accordingly, the durability of the load-measuring pot bearing with built-in load cell shall be secured and the environmental effects like temperature shall be minimized for its application on field. This study conducted fatigue tests up to 10 million cycles on a load-measuring pot bearing with the capacity of 1000 kN to examine eventual degradation of the measurement accuracy with respect to the number of fatigue loading cycles. In addition, the experimental temperature correction procedure is proposed to obtain the temperature correction formula enabling to correct the effect of temperature on the load measurement.
- J.-R. Cho, Y. J. Kim, J.-W. Kwark, S.Y. Park, W. J. Chin and B.-S. Kim, “Load-Measuring Pot Bearing with Built-in Load Cell—Part I: Design and Performance,” Engineering, Scientific Research Publishing, 2013 (under Review).
- Ministry of Land, Transport and Maritime Affairs, Highway Bridge Design Code, 2010, in Korean.
- Korea Institute of Construction Technology, “R&D on the Safety of High-Speed Railway Structures,” R&D Report, 2002, in Korean.
- Korea Institute of Construction Technology, “Development of Stabilization Techniques for Track Construction System of the High-Speed Railway,” R&D Report, 2003, in Korean.
- Korea Institute of Construction Technology, “Development of Stabilization Techniques for Track Construction System of the High-speed Railway,” R&D Report, 2004, in Korean.